Answer:
Unbalanced forces is the correct answer.
Explanation:

Explanation:
At the top of the tree, the velocity of the pebble is purely horizontal so we can calculate it as


False.
Theories are hypotheses that have been shown to accurately and predictably explain results obtained through repeated experimentation, to the point where the hypothesis can be assumed to be true. Then, such a hypothesis would be considered a theory.
The sun is a clear example of objects releasing radiation in nature